Treatise on Materials Science and Technology, Volume 2; Volume 19, Part 1 |
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Page 158
The bandgap determines the range of optical transparency of the material and
also to some extent dispersion of optical constants such as refractive index . In
addition the bandgap fixes the limits for energy levels available to free charge ...
The bandgap determines the range of optical transparency of the material and
also to some extent dispersion of optical constants such as refractive index . In
addition the bandgap fixes the limits for energy levels available to free charge ...
Page 161
For high bandgap material and low doping such PL spectra are usually rather
broad ( at 77 or 293 K ) and derived from phonon - assisted recombination of free
excitons ( Bachrach and Lorimor , 1973 ) . The free exciton binding energies in
our ...
For high bandgap material and low doping such PL spectra are usually rather
broad ( at 77 or 293 K ) and derived from phonon - assisted recombination of free
excitons ( Bachrach and Lorimor , 1973 ) . The free exciton binding energies in
our ...
Page 176
Thus the quantity Ed + E , is determined for each donor and acceptor investigated
, in relation to the assumed value of the bandgap . An accurate value for the
bandgap , on the other hand , is generally not easily obtained from experimental
...
Thus the quantity Ed + E , is determined for each donor and acceptor investigated
, in relation to the assumed value of the bandgap . An accurate value for the
bandgap , on the other hand , is generally not easily obtained from experimental
...
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Contents
Principles of XRay Stress Measurement | 4 |
Control of Accuracy and Precision | 25 |
Applications | 45 |
Copyright | |
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absorption addition allow alloy angle Appl applications atoms band bandgap beam broadening cause coefficients components composition concentration constant cooling cross section crystal curve defects dependent deposits depth determined developed diffraction diffusion direction discussed dislocation distribution effect electron elements employed energy error et al example excitation experimental factor field function give given grain heat important impurities increasing intensity iron laser lattice layer less magnetic material measurements Metals method Mössbauer needed neighbor observed obtained occur optical peak phase photoluminescence Phys plane position possible powder problem produce properties range rays recently recombination region relative residual stress sample semiconductors shift shown Society solid spacing specimen spectra spectrum sputtering steel strain structure studies substrate surface target technique temperature term thickness values variation X-ray